package org.example.jiaxiao.service;

import org.example.jiaxiao.entity.Coach;
import org.example.jiaxiao.entity.Student;

import java.util.List;

public interface CoachService {
    List<Coach> getAllCoaches();
    
    Coach getCoachById(Integer coachId);
    
    int addCoach(Coach coach);
    
    int updateCoach(Coach coach);
    
    int deleteCoach(Integer coachId);
    
    List<Student> getStudentsByCoachId(Integer coachId);
}
